According to Motorola, you need the Motorola Phone Tools (MPT) software that should of came on a seperate cd with your phone. The software package contains a special usb driver so that your computer can talk to your phone. Version 4.3.5 or greater is required for the Razor. After the software is installed, you also need to set your phone up as a Data\Fax connection. The procedure is
here. (See USB Connection Settings #5)
Motorola wants a whopping $40.00 for the MPT package seperately (what a rip, though it does come with the needed cables

) but I guess it could save you money in the long run. It can be purchased
here. If you decide to go that route, install the software
before you plug the phone into a usb port.